The success associated with using triangulation as a means of
determining appropriate affine transformation parameters hinges
on the fact that the Delaunay triangulation of a set of points is both
unique, and possess high local stability [19]. However, the stability
has a limit; extreme low quality prints with a large number of
missing or spurious minutiae can result in triangulation maps that
lack any correspondence when compared to maps associated with
high quality known-match prints [11]. The result is an automated
registration procedure that will result in a low match score, despite
the presence of matching (but spatially distant and dispersed)
minutiae. In other words, the algorithm is sensitive to the number
of corresponding minutiae in a localized area, rather than the total
number of matching minutiae between two prints. However, the
match score that results from registration using triangulation is
actually a good measure of local correspondence and the presence of
minutiae with a compact spatial configuration (as opposed to
distant matching minu
The success associated with using triangulation as a means ofdetermining appropriate affine transformation parameters hingeson the fact that the Delaunay triangulation of a set of points is bothunique, and possess high local stability [19]. However, the stabilityhas a limit; extreme low quality prints with a large number ofmissing or spurious minutiae can result in triangulation maps thatlack any correspondence when compared to maps associated withhigh quality known-match prints [11]. The result is an automatedregistration procedure that will result in a low match score, despitethe presence of matching (but spatially distant and dispersed)minutiae. In other words, the algorithm is sensitive to the numberof corresponding minutiae in a localized area, rather than the totalnumber of matching minutiae between two prints. However, thematch score that results from registration using triangulation isactually a good measure of local correspondence and the presence ofminutiae with a compact spatial configuration (as opposed todistant matching minu
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